Citation: F. Mueller in Bentham, Linnaea 26:612 (1855).

Derivation: nemato (Gr.)—thread-like; phyllon (Gr.)—a leaf.

Synonymy: Acacia calamifolia

Common name: None

Description:
Bushy shrubs to 2.5 m tall; branchlets angled at extremities, glabrous.

Phyllodes narrowly linear 20-40 mm long, 0.7-1.5 mm wide, ascending to erect, straight or shallowly curved, slightly hooked, flat or cylindrical, glabrous, grey-green, 4-veined in all, midrib impressed or raised; pulvinus distinct and articulate.

Inflorescence of solitary globular heads. Peduncle axillary 4-15 mm long, glabrous. Flower-heads globular 30-40~flowered. Flowers 5-partite

Legumes linear, raised over seeds and slightly constricted between them to 11 cm long, 5-6 man wide coriaceous to subwoody, glabrous. Seeds longitudinal, oblongoid to ellipsoid 4.5-5 mm long c. 2.5 mm wide, black; funicle 1/2-3/4 encircling seed, reddish-brown.

Distribution:  A common species on southern Eyre Peninsula and on Yorke Peninsula. There are two records from the Southern Lofty region where its presence needs checking. S.Aust.: EP, YP, SL. Flowering time: It has been recorded in flower in all months except June with a peak in summer November to February.

SA Distribution Map based on current data relating to specimens held in the State Herbarium of South Australia

Biology: No text

Taxonomic notes: This species was included within A. calamifolia in the first edition. It is closely related to wallowa and the two are discussed in detail in Maslin & Whibley (1987). Probable hybrids with A. anceps are recorded from a few localities. It is a variable species that needs more detailed study.

The peduncles of A. nematophylla are always solitary in the axils of the phyllodes compared with the short axillary racemes of A. calamifolia.

The phyllodes of A. nematophylla are frequently short and tend to dry more coarsely wrinkled than those of A. calamifolia. The two species do not normally overlap in their distribution.

Cultivation: It is probable that some plants grown as A. calamifolia are in fact A. nematophylla. It is an attractive shrubby wattle well worth growing.

Author: Not yet available

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